Spray cylinder with retractable pins

Details Spray cylinder with retractable pins Spray cylinder with retractable pins

1990-02-20

1991-06-11

Miller, V.

Tobacco

Tobacco treatment

With fluid or fluent material

A24B 310, A24B 312, A24B 318

Patent

active

050224166

ABSTRACT:
Retractable, self-cleaning pins are mounted on a rotating spray cylinder. Each pin is caused to extend into the cylinder during the upward motion of the pin in order to help convey material within the cylinder. Retraction of each pin occurs during its downward motion in order to remove material adhered to the pin. Extension and retraction of the pins may be controlled by such means as a cam. If desired, the interior surface of the cylinder may be scraped (e.g., by a stationary scraper) where the pins are retracted.

REFERENCES:
patent: 687308 (1901-11-01), Hawkins
patent: 4657031 (1987-04-01), Sartoni
patent: 4681124 (1987-07-01), Hinzmann et al.
patent: 4730627 (1988-03-01), Burcham, Jr. et al.

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